Shock-absorber.



A. H. SCHAAL.

SHOCK ABSORBER.

APPLICATION FILED AUG.12,1913.

1,099,943, I Patented June16,1914

WVM/momo UNITED sTATEs PATENT OFFICE. ALVIN fascina or' BU'TTE, Mo'NTANA.

'sHooI-,Ansoncsna Specieation f Letters P atent.

Patented June 16, 1914.

To all whom it may concern.'

Be it known'that I, ALvIN I-I. SCHAAL, a citizen of the United States, residing at Butte, in the county of-Silverbow, State of Montana, have invented certain new and use:

A ful Improvements in Shock- Absorbers; and

and has for an object to provide a device of this character including an elliptical spring operatively connected to a piston and its casing with means for locking the piston stationary should the spring become broken.

A further object 1s to provide a device of this character that will be formed of a few simple and inexpensive parts which will' not easily get out of order. l

With the above objects in view the inven tion consists of certain novel details of construction and combination of part-s hereinafter fully described and claimed, it being understood that various modifications may be made in the minor details of construction within the scope of the appended claims.

In the accompanying drawing illustrating this invention z-Figure 1 is a slde 'elevation showing the application of'my invention to a wheel hub. Fig. 2 isl a rear elevation. Fig. 3 is a longitudinal sectional view taken on the line 3--3 Fig. 1. Fig. 4 is a frag# F mentary sectional view taken on the liney Referring now to the Vdrawing in which like characters of reference designate similar parts, 10 designates the hub of a wheel, and 11 the spindle thereof.

In carrying outl my invention I provide an eye 12 for engagement-with the spindle, the eye terminating at the up er end in a transversely disposed integral -Shaped clip 13 which receives the lower side of an elliptlcal spring 14. There is a U-shaped clip 15 disposed to engage the upper-side of the elliptlcal sprin in thel same manner as the lower clip 13. is engaged through the legs ofthe upper clip, there being a shoulder 17 on the caslng which bears upon the' upper side of the clip,- and there belng a Anut '18' threadedf on to the lower end of the casing a'ndengaged against the lower side of theclip toseeurethe casing to the clip.

cylindrical piston casing 16 A .piston 19 in the nature of a cylindrical rod 1s slldably and frictionally disposed in the' bore of the casing 16 and passes down outside 'of the lelliptical spring14 as shown, the plston being terminally passed through the egs ofthe lower cli- 13., There is a shoulder' 20 formed on t e piston to bear against the upper side of the lower clip, and a nut 21 is threaded on the piston and bears against the lower side of the lower clip, w erebyv the piston is secured firmly to the lower clip. It will thus be observed that upon vibration of the elliptical spring, the piston will reciprocate within the casing, the frictional engagement of the piston in the casing being the agency to absorb shocks.

For locklng the piston stationary to the casing in case of breaking of the elliptical spring, there is an eye 22 formed on the co1- lar 17 'of the casing, and a set screw 23 is threaded through Athis eye and through an opening 24 in the casing, and is adapted to be advanced into engagement with the piston when it is desired to lock the piston stationary tothe casing. When the piston is locked to the casing, it is evident that there Vis a single rigid connection between the wheel spindle and casing.

f From the above description it will be seen that I'have provided an extremely simple and inexpensive shock absorber of the class described which is formed of a few simple and durable parts that will not easily get screw for lockingy the piston stationary to -v i the casing.

2. A shock absorber including an elliptical spring, a clip secured to the lower side of the spring.,- a second vclip secured to-the vupper side of the spring, a pist'on casln'gse-l cured to the up er c1p,'a piston in said casing secured to t e lower cl1p, and a set screw 1 'threaded into said Casing and adapted to be ton stationary to t e casing'. y i 4:3Q- A..Shock absorber inc uding 'an ellipti- `cal spring, a wheel engagin member havengagedwith said iston for locking the pising a clip at the upper en engaging the'f.

to the upper clip, a piston in said casing removably secured at the lower end to the 15 lower clip, and a set screw threaded in said casing and adapted to be engaged with said piston for locking said piston stationary t0 said casing.

In testimony whereof, I aiix my signa- 20 ture, in the presence of two witnesses.

ALVIN H. SCI-IAAL.

Witnesses:

GEO. F. DOWNER, W. E. CURRY. 

